Trolley



Oct. 26 1926 1,604,162

A. L. HENRY ET AL TROLLEY Filed Nov. 7-, 1924 5 Ill gwu a hbom q Andrew LHenr Giles Moore Patented Oct. 26, 192

UNITED STATES PATENT OFFICE.

ANDREW I. HENRY AND GILES S. MOORE, OF INDIANAPOLIS, INDIANA, ASSIGNORS T TROLLEY SHOE WHEEL COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

TROLLEY Application filed November 7, 1924. Serial No. 748,484.

Our said inventionrelates toa trolley and it is an object of the same to provide a defvice of this character with a shoe taking the place of the usual wheel, said shoe being mounted to float on a pivot on the trol- 0 wire.

Another object is toprovide means for indicating thelimit of permissible wear so that employees of a trolley company will have immediate and certain information as to when the shoe should be removed and discarded. In cases where the shoe is an integral part of the trolley this will mean of course that the entire trolley is to be dis: carded at this time, but where a removable wear shoe is used it will be necessary only to replace the wear shoe. a

Still another object is to improvethe means for conducting current fromfthe wire through the trolley. j t

A further object of the invention is to provide improved means for limiting the swing of the trolley when the trolley is off the wire from any cause.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similarparts, a t

Figure 1 is a side elevationof our device in one position of use, I

Figure 2, a side elevation in another position, t

Figure 8, an. end elevation of and a Figure. 4c, a section on line 4- -4 of'Figthe "trolley,

ure 1. a

In the drawings reference characterlO indicates a harp having forks 11. Such harp maybe of ordinary conventional character or of any desirable construction adapted to @cooperate with the features ofourimproved trolley. A pin 12 passes through bearings at the upper end of the trolley harp andis securedin place in any convenient manner this pin providinga bearing for the trolley,

which has side flanges 13 forming a groove between them. In the position shown in Figure l the groove provldes a shoe having a straight face at 14 which face is horizon tal in Figure 1, i. e. during forward move ment of the trolley. t

Inthe operation of trolley shoes it is important thatthe relationship between the fulcrum or point of contact between the wire and shoe maintain a fixed relation to the axis of the shoe so that regardless of the wear in use the balance of the shoe on its axis will be maintained uniform.

To accomplish this result we determine the point on the wearing face ofthe shoe at which this fulcrum should be maintained in order to produce the best results and then at this point out an aperture through the shoe forming a shoulder with a straight vertical face 15 adjacent to the axis so that as the wearing face wears down the point of the fulcrum will be maintained. This aperture also serves as a means for ready clearance of the wearingface of the shoe from accumulations of dirt, ice, snow, etc., which readily fall through and thus are quickly removed from interfering with the contact and the operation.

The face 15 is further useful in that provides a convenient means for viewing the shoe to determlne the amount of wear; To further facihtate an estnnate of the amount of wear we have provided means adjacent the vertical face of said shoulder, here shown as comprising a horizontal pin so located that when the trolley wire 17 comes into engagement with the pin it is time to discard the trolley and replace it with a new one. It will be readily understood that various other means might be substituted for the pin and in some instances even a mark on the rear face of the shoulder might serve the purpose though this would be more likely to become obscured by dirt and the like than is the pin 16.

t The flanges 13 are continued around at least two sides of the trolley which is roughly circular with flattened parts providingthree or four sides approaching the form of a trapezium; At a side of the trolley adjacent to the face 14 these flanges form a vgroovewith a bottom face 18 along which the wire rides to a wheel 19 during reverse movement of the trolley and the car by which it is carried, as indicated in Figure 2. The wheel 19 and the face 18 are arranged to touch the wire at the same time in backing up. the working faces at 18 and on the wheel being n line with each other. I

A narrow bracing portionindicated at 20 connects the part of the trolley adjacent the wheel 19 to the part at the left end ofthe shoe 14 in Figure 1. This brace 20 is forked adjacent the wheel, the forks corresponding to the flanges 13, and the forks are perforated to provide bosses 21 for the fixed pivot 22 of the wheel 19. In the normal position of the trolley these bosses lie near to but out of contact with the trolley harp but should the trolley get off the wire they can act to limit the swinging movement of the trolley in one direction. Stops 23 are provided at opposite sides of the trolley to limit the movement of the same in the contrary direction, thelocation of the stops 23 being at the opposite extremeposition of the harp from the position where the bosses 21 contact with it. i

The trolley has a flat fin at 2 1 through which the pin 12 passes, and copper plates 25 are riveted to said fin by copperrivets 26, said plates being sprung out to bear against the forks 11 of the harp' with their outer faces. This construction insures permanent electrical contact of the trolley and the harp, and thus provides for an uninterrupted flow of current.

It will be obvious to those skilled in the art that various changes may be made in our device without departing from the spirit of the invention and ther'eforewe do not limit ourselves to what is shown in the drawings and described in the specification, but only asindicated in the'appended claims. Having thus fully described our said invention, what we claim as new and desire to secure by Letters Patent is:

1. A trolley shoe having a contact face, one end of the contact face being determined by an aperture in the shoe whereby wear will not affect the relationship'between theffulcrum and the axis of the shoe, substantially as set forth.

, 2. A floating trolley having a contact face for a wire, a face intersecting the first-named face to define a fulcrum for the shoe, and a xpivot for the trolley so located with relationto the faces as to maintain the balance of the shoe regardless of wear, substantially as set forth.

3. A sliding trolley shoe having a contact face for a wire. a second contact face disposed at an-angle to the'first named contact face, and a pin betwcenthe contiguous ends of said contact faces for determining the amount of wear on one of said contact faces,

substantially as set forth.

4. In a trolley structure, a harp having forks. a trolley between the forks having a pair of contact faces with their inner ends in spaced adjoining relation, said contact faces forming an angle the axis of said shoe beingdisposed in the angle between said contact faces, and copper plates fixedto said shoe and having their outer ends engaging the forks of the harp aboutthe axis of the shoe, substantially asset forth.

51A trolley having a contact face for a wire, a-pivot for thetrolley, and an aperture through the trolley at one end of said face and adjacent to the pivot providing means for permitting the ready clearance of the trolley face through which aperture accumulations may readily pass, substantially as set forth, r

'6. A trolley having a shoe for engaging the trolley wirein one direction of movement, a wheel for engaging it on movement in the opposite direction, bosses for the pivot pin of the wheel arranged to engage-the harp and limit the movement'of the trolley in one direction, and stops adjacent an end of the shoe engaging the harp to limit movement of the trolley in the opposite direction, substantially as set forth.

7.'A trolley having a shoe normally engaging a trolley wire duringforward movement of the trolley,said shoe terminating at its'rear end in an abrupt shoulder, a wheel for engagement with said wire on backward movement of thetrolley the axis of said wheel being spaced rearwardly from the axis of the trolley during such forward movement. substantially as setforth.

8.'A trolley having a shoe normally engaging a trolley wire said shoe terminating atits rear end in an abrupt, shoulder. a wheel spaced rearwardly from said shoulder for engagement with said wire on reverse movement of the, trolley, and means inoperative relation to said shoulder for indicating the limit of'permissible wear on said shoe, substantially as set forth.

9. A trolley having a shoe normally engaging the trolley wire said shoe termipermissible wear on the shoe, substantially as set forth.

10.].A trolley having a shoe normally engaging the trolley wire during forward movement of the trolley said shoeterminating at its rear end in an abrupt shoulder, a wheel for'engagementwith said wire upon backward movement of the trolley the axis In Witness whereof, We have hereunto set of said Wheel being spaced rearwarclly from our hands and seals at Indianapolis, Inthe axis of the trolley during such forward cliana, this 23rd day of October, A. D. nine- 10 movement, and a face between said shoe and teen hundred and twentyiour.

said Wheel also engaging the Wire upon backward movement of the trolley, substantially ANDREW L. HENRY. [L.S.]

as set forth. GILES S. MDORE. [1 8.] 

